Screen



PATENTBD FEB. 2, .1904.

U. S. BRIGGS.

SCREEN.

APPLICATION FILED SEPT. 13,1902.

N0 MODEL.

WITNESS I I M'IV'ENTOR v g 7 gz71 01 96565 dflmyys ls ms commrrn-umnu WASHINGYON D c Patented February 2, 1904.

PATENT OFFICE.

ULYSSES S. BRIGGS, OF PLAINFIELD, WISCONSIN.

SCREEN.

srEcIracArroN forming pm of Letters Patent No. 75i,375, dated February 2, 1904.

Application filed $eptember 13 1902. Serial No. 123,325; (No model.)

. To all whom izimcty concern:

window or door screen which will securely prevent entrance of flies or other insects n the outside thereof, and yet at the same time permit escape of any thereof that may be moving on the inside of the door or window.

With this object in view my invention resides in an appropriately shaped and constituted main frame carrying netting or other desirable screening-surface, a supplementalframe disposed adjacent to, but somewhat rei moved from, one end of the main frame, and

' frame and terminating at a point somewhat parts, I have illustrated one embodiment of means for maintaining the two frames in operative relation. I

Furthermore, the invention resides -m a frame, a main body of screening material ex-.

tending from the side pieces of said frame and from the lower piece thereof to a point somewhat removed from the upper piece of the frame and secured thereto by a transverse strip, a supplemental body of screening material disposed upon the upper piece of said below and removed from the upper end of the main screening material, being secured to the frame at its lower edge by a transverse strip attached thereto, leaving an opening there, and guard-pieces carried, respectively, by both bodies of screening material, and, finally, the invention comprises various novel details of construction and arrangement of parts as will be more fully hereinafter described and claimed.

In the accompanying drawings, forming a part of this specification, and in which like letters of reference indicate corresponding invention, though it is to be understood that I may employ embodiments thereof other than that herein shown and yet be within the scope of my inventionthat is to say,

Figure 1 is a view in front elevation of my invention. Fig. 2 is avertical section of the same; andFig. 3 is a view in section of the upper part of the screen, showing the arrangement of the two bodies of screening material.

In the employment of screen-doors and window-screens it often happens that flies and other insects secure entrance into the room to which the screens are applied,'as when a door is opened, and that then these insects endeavor to escape therefrom and to this end fly to and crawl upon the screens in the doors and windows. There being no opening through which they can readily escape they are held prisoners. Now it has come to be known that insects, and particularly flies, when they light upon a screen almost invariably crawl from the spot where they light up toward the upper end of the screen and seldom down toward the lower end thereof. Moreover, should they happen to been the outside of the screen their tendency of movement is in the same direction. Therefore Ihave found by observation that if an opening be left toward the upper end of the screen; up to and through which they naturally crawl, flies, &c. will escape therethrough; but

.by reason of their seeming disposition not to suitably grooved, beaded, or otherwise ar ranged to hold a main body B, of screening material. In practice Iprefer to extend this screening material from the side pieces a and a and from the lower piece a up toward, but not entirely to, the upper piece a and be secured to a crossiece 60 disposed near this upper end piece a. From this upper end piece a, however, I prefer to extend a second body C, of screening material, which extends, preferably, to and slightly beyond the upper edge of the screening material B and carries at its lower end a cross-piece 5, extending from one side piece, 0 to the other, (1, To produce an opening 6 I prefer to have the edges of each of the screening materials somewhat removed from each other for, preferably, the entire width of the frame.

Projecting from the screeningbodies B C, I leave the raw and slightly-unraveled edges of the materials B C and bend the same upward, so that they approach and nearly bear upon the screening-bodies. These are held in rigid position by the transverse strips and leave space enough for an insect to crawl through, but to prevent its passage with outstretched wings.

It will be seen that a pair of such screens as I have described may be suitably mounted together, so as to be capable of extension and retraction to fit any-sized opening and still be within the scope and spirit of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

In a screen, in combination with a frame, screening material secured on both sides thereofon the reverse side extending from the bottom with a free edge nearly to the top and on the obverse side extending from the top to a point, with a free edge, beyond the edge of the screening material on the reverse sidc transverse strips, attached to the free ends of the screening material and secured to the frame and constructed to hold the free ends of the screen material in operative position and guard edges, constructed to prevent the ingress of insects, bybending toward each other the raw edges of the screening material, substantially as described.

In testimony whereof I aifix my signature in the presence of two subscribing witnesses.

ULYSSES S. BRIGGS.

Witnesses:

BLANCHE H. BRIGGS, C. O. BOOTH. 

